Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:57 2012 Optimize a model with 38 rows, 112 columns and 112 nonzeros Model has 74 quadratic constraints Presolve removed 0 rows and 6 columns Presolve time: 0.44s Presolved: 38 rows, 106 columns, 106 nonzeros Variable types: 74 continuous, 32 integer (31 binary) Root relaxation: objective 0.000000e+00, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 17.0000000 - - - 0s 0 0 0.00000 0 11 17.00000 0.00000 100% - 0s 0 0 0.00000 0 20 17.00000 0.00000 100% - 0s 0 0 0.00000 0 20 17.00000 0.00000 100% - 0s 0 2 0.00000 0 18 17.00000 0.00000 100% - 0s * 14 14 11 5.0000000 1.03846 79.2% 15.9 0s * 34 12 6 4.0000000 1.90476 52.4% 12.5 0s Cutting planes: Gomory: 2 Explored 78 nodes (948 simplex iterations) in 0.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%